Windows 7 OS in boot loop, wont start - Windows 7 Help Forums
Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Windows 7 OS in boot loop, wont start

04 Sep 2011   #1

Windows 7 Ultimate 32bit
Windows 7 OS in boot loop, wont start

I am running Windows 7 Ultimate on a HP Pavilion M9080N. About a week ago the computer went into a Startup Repair loop and Windows would not start. The message I kept on getting was "Startup Repair cannot repair this computer automatically".
I performed numerous system restores back to the first restore point, but it stil went into the Startup Repair loop.
One of the lines in the Repair details said "Root cause found: Boot critical file C:\Windows\system32\drivers\atapi.sys is corrupt. and another said "Root cause found: Boot critical file C:\ataport.SYS is corrupt.
I tried replacing it with a good file from the Win7 install disc by going into command prompt and typing "copy X:\Windows\System32\Drivers\acpi.sys C:\Windows\System32\Drivers\acpi.sys" and copy X:\Windows\System32\Drivers\apaport.sys C:\Windows\System32\Drivers\apaport.sys
I now get the OS restart loop without actually starting. When I restart with the Windows 7 with the install disc it continually searches for the problem and seems to fix it but when I restart it goes back to the OS restart loop without actually starting.
So I implemented the following on command prompt, as per Microsoft support article
  • bcdedit /export C:\BCD_Backup
  • c:
  • cd boot
  • attrib bcd -s -h -r
  • ren c:\boot\bcd bcd.old
  • bootrec /RebuildBcd
Which did not work. Now the OS is in a boot loop, where I get the Windows Starting screen, which then goes to a blank screen with just the cursor then it re boots to the Windows Starting screen again. Appreciate any help to fix this problem.

My System SpecsSystem Spec
04 Sep 2011   #2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86

Try restoring a pristine copy of the registry from the regback foldet as explained in the later stages of this tut.

Startup Repair Infinite Loop Recovery

If that doesnt work, run sfc scan a few times and failing that a repair install.

SFC /SCANNOW Command - System File Checker

Repair Install
My System SpecsSystem Spec
04 Sep 2011   #3

Windows 7 Ultimate SP1 64-Bit

I can't promise this will work, but you might want to try the following command prompts while you're in the recovery environment.

Open an elevated command prompt and type Bootrec.exe then press Enter.

Now type /FixMbr
This command doesn't overwrite the existing partition table, but repairs a corrupted master boot record.

Next, type /FixBoot
This command writes a new boot sector to the partition.

Last, repeat /RebuildBcd
This command completely rebuilds the BCD store.
My System SpecsSystem Spec

 Windows 7 OS in boot loop, wont start

Thread Tools

Similar help and support threads for2: Windows 7 OS in boot loop, wont start
Thread Forum
Solved Windows 7 Start up repair loop General Discussion
Solved windows 7 wont boot, wont go to safe mode or start on windows 7 disk BSOD Help and Support
Windows 7 Machine Stuck in Start Up Repair Loop ... BSOD Help and Support
Solved Windows 7 boot loop? General Discussion
windows 7 boot loop no f8 BSOD Help and Support
help with operating system boot display time, start up repair loop Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:42.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App